On 02/17/2011 09:15 PM, Larry Hudson wrote: > A true time waster indeed -- it's an infinite loop that will _never_ end. > > Others have already about the need of the shebang line to run as a python > script, but I'm > surprised no one mentioned how truly useless this code is. > > The i = 0 line is totally unnecessary. The variable i is created and set to > zero by the first > iteration of the for loop. The break will abort the for loop (NOT the while > loop) in the first > iteration, and the 2nd through the 10th iterations will be skipped altogether.
To be fair the range() call will be fairly time and memory-consuming on python 2, since it returns a list. > > This effectively leaves your code as: > > while True: > pass # Do nothing, forever > > An empty loop as a time delay can occasionally be useful, but as a practical > matter, a for loop > with only 10 (empty/pass) iterations is probably too short for anything > useful. Instead of > being empty, do some more complex (but ignored) operation -- say math.sqrt() > or math.sin() for > example -- and a much larger repetition count. But it's likely that does use > up processor > cycles unnecessarily, although it can give you delays of fractions of > seconds. If you want > delays greater than a second, check out the time.sleep() function. > > -=- Larry -=- -- http://mail.python.org/mailman/listinfo/python-list
